diff --git a/scapy/contrib/gtp.py b/scapy/contrib/gtp.py
index 9be00b7e33be97533f0eb2f98624ce5a9c7a357a..e54b0ac634e87ff5ce30231660aa2e83f6ff115d 100644
--- a/scapy/contrib/gtp.py
+++ b/scapy/contrib/gtp.py
@@ -170,7 +170,7 @@ class IE_SelectionMode(Packet):
     # Indicates the origin of the APN in the message
     name = "Selection Mode"
     fields_desc = [ ByteEnumField("ietype", 15, IEType),
-                    BitEnumField("SelectionMode", "MSorAPN", 8, Selection_Mode) ]
+                    BitEnumField("SelectionMode", "MS or APN", 8, Selection_Mode) ]
     def extract_padding(self, pkt):
         return "",pkt